CN110474719B

CN110474719B - Method and device for repeated transmission

Info

Publication number: CN110474719B
Application number: CN201810459923.1A
Authority: CN
Inventors: 张蕾; 王磊; 陈雁; 吴艺群
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-05-11
Filing date: 2018-05-11
Publication date: 2021-10-22
Anticipated expiration: 2038-05-11
Also published as: EP3817260A1; US11558150B2; EP3817260A4; CN110474719A; WO2019214748A1; US20210058193A1

Abstract

The embodiment of the application provides a method and a device for repeated transmission, relates to the field of communication, and can improve the decoding success probability of user equipment. The method comprises the following steps: the user equipment executes the first transmission of uplink data and sends a first reference signal to the network equipment based on the first transmission power; the first reference signal is used for demodulating the first transmission of uplink data; the user equipment executes the Nth transmission of the uplink data and sends a second reference signal to the network equipment based on the second transmission power, wherein N is an integer greater than or equal to 2; the second reference signal is used for demodulating the Nth transmission of the uplink data; wherein the second transmission power is less than the first transmission power. The embodiment of the application is applied to the uplink transmission process in the grant-free mode.

Description

Method and device for repeated transmission

Technical Field

The present application relates to the field of communications, and in particular, to a method and an apparatus for repeated transmission.

Background

In the third generation mobile communication technology (3-generation, 3G) or the fourth generation mobile communication technology (4-generation, 4G), the uplink transmission generally adopts a grant-based mode, that is, User Equipment (UE) requests a base station for transmission resources and transmission parameters before uplink transmission, and the base station determines the transmission resources and the transmission parameters based on the request and issues the transmission resources and the transmission parameters to the user equipment through a control signaling. In the fifth generation mobile communication technology (5-generation, 5G) communication, a new transmission mode is proposed, i.e. no dynamic scheduling uplink transmission (uplink transmission with dynamic scheduling), also called as no dynamic grant uplink transmission (uplink transmission with dynamic scheduling grant), or configured grant uplink transmission (uplink transmission with configured granted uplink grant), or grant-free uplink transmission (grant-free uplink transmission). In the mode of no dynamic scheduling uplink transmission, the user equipment does not need to request scheduling resources to the base station before sending data, but directly sends service data by using the time-frequency resources pre-configured by the base station, so that the signaling overhead can be greatly reduced and the access delay can be shortened. In the mode without dynamically scheduling uplink transmission, in order to improve reliability, the ue transmits uplink data in a repeat (retransmission) transmission manner, that is, the same data packet may be repeatedly transmitted K times, where K is an integer greater than 0. The user equipment sends the pilot frequency at the same time when sending the data packet each time, and the base station judges whether the user equipment transmits the data packet in the current sub-frame or not by detecting the pilot frequency.

Existing communication protocols (e.g., protocols of 3GPP 38.214 series) specify Transmission Opportunities (TO) for which a ue is capable of initial transmission in a repeat transmission within one transmission period P. For example, when the Redundancy Version (RV) sequence is {0, 0, 0, 0} or {0, 3, 0, 3}, the initial transmission in the repeated transmission may start from the TO where RV0 is located in transmission period P. In the mode without dynamically scheduling uplink transmission, when time-frequency resources pre-configured for different UEs by a base station are the same or overlap, initial transmission and retransmission of different UEs may collide. As shown in fig. 1, taking RV sequence configured by the base station as {0, 3, 0, 3}, the initial transmission of UE2 collides with the retransmission of UE 1. The pilot for initial transmission sent by the UE2 is interfered by the pilot for retransmission sent by the UE1, which affects the detection of initial transmission by the base station for the UE 2.

Because the decoding reliability of the initial transmission of the UE is highest, when the initial transmission of the UE collides with the retransmission of other UEs, the detection reliability of the initial transmission of the UE is possibly reduced, so that the decoding success probability of the UE is reduced.

Disclosure of Invention

The embodiment of the application provides a method and a device for repeated transmission, which can improve the decoding success probability of initial transmission sent by user equipment.

In a first aspect, an embodiment of the present application provides a method for repeated transmission, including: the user equipment executes the first transmission of uplink data and sends a first reference signal to the network equipment based on the first transmission power; the first reference signal is used for demodulating the first transmission of uplink data; the user equipment executes the Nth transmission of the uplink data and sends a second reference signal to the network equipment based on the second transmission power, wherein N is an integer greater than or equal to 2; the second reference signal is used for demodulating the Nth transmission of the uplink data; wherein the second transmission power is less than the first transmission power. The first transmission of the uplink data, namely the initial transmission of the uplink data, and a first reference signal, namely the initially transmitted reference signal, sent based on the first transmission power; and the Nth transmission of the uplink data, namely the (N-1) th retransmission of the uplink data, and the second reference signal, namely the (N-1) th retransmission reference signal, sent to the network equipment based on the second transmission power.

Compared with the prior art, the collision between the initial transmission of a certain user equipment and the retransmission of other user equipment may cause the detection reliability of the initial transmission of the user equipment to be reduced, so that the decoding success probability of the user equipment is reduced.

In one possible implementation manner, the ue controls the first transmission of the uplink data based on the third transmission power; the user equipment controls the Nth transmission of the uplink data based on the fourth transmission power; wherein the third transmission power is the same as or different from the fourth transmission power.

In one possible design, the third transmission power is greater than the fourth transmission power. The decoding reliability of the initial transmission of the user equipment is highest, so that the transmission power corresponding to the first transmission is greater than the transmission power corresponding to the Nth transmission of the uplink data, the network equipment is favorable for better receiving the first transmission of the uplink data, and the decoding reliability of the user equipment is improved.

In one possible implementation, the first transmission power is the same as the third transmission power, or the first transmission power is greater than the third transmission power.

The base station demodulates the first transmission of the uplink data according to the first transmission power of the reference signal, so that the first transmission power is greater than the third transmission power, and the network equipment can demodulate the first transmission of the uplink data better.

In one possible implementation, the second transmission power is the same as the fourth transmission power, or the second transmission power is smaller than the fourth transmission power.

It should be noted that, for each ue, the second transmission power is smaller, which can better reduce the influence of the reference signal retransmitted by other ues on the reference signal initially transmitted by the ue, and is beneficial to the ue to perform the first transmission of uplink data better, and can improve the decoding reliability of the initial transmission of the ue, thereby improving the decoding reliability of the ue.

In one possible implementation, the method further includes: the user equipment performs the (N + 1) th transmission of the uplink data and sends a third reference signal based on the fifth transmission power, wherein the third reference signal is used for demodulating the (N + 1) th transmission of the uplink data; wherein the fifth transmission power is the same as or different from the second transmission power.

In one possible design, the fifth transmission power is less than the second transmission power. Therefore, compared with the influence of the reference signal retransmitted based on the second transmission power on the initially transmitted reference signal, the influence of the reference signal retransmitted based on the fifth transmission power on the initially transmitted reference signal is smaller, which is beneficial to the network equipment to better receive the first transmission of the uplink data, and the decoding reliability of the initially transmitted reference signal of the user equipment can be improved, so that the decoding reliability of the user equipment is improved.

In one possible design, the user equipment performs an (N + 1) th transmission of uplink data based on a sixth transmission power. Wherein the sixth transmission power is the same as or different from the fourth transmission power. That is, the transmission power of the uplink data of the N +1 th transmission and the transmission power of the uplink data of the nth transmission may be the same or different. In one possible design, the sixth transmission power is less than the fourth transmission power.

In a possible implementation manner, the first transmission power is determined according to the maximum transmission power of the user equipment, an expected target power value of an uplink channel, an open-loop power control parameter, a power offset value of a modulation and coding strategy MCS, a closed-loop power control adjustment amount and a transmission bandwidth allocated to the user equipment; the expected target power value of the uplink channel is determined according to a first parameter, cell reference power and power offset of the user equipment, wherein the first parameter is used for determining the power offset of the user equipment, and then the size of the first transmission power can be adjusted.

In a possible implementation manner, the first transmission power is determined according to the second parameter, the maximum transmission power of the ue, the expected target power value of the uplink channel, the open-loop power control parameter, the power offset value of the modulation and coding scheme MCS, the closed-loop power control adjustment amount, and the transmission bandwidth allocated to the ue; wherein the second parameter is determined by the user equipment or the network equipment.

In a possible design, the size of the first transmission power may be adjusted by adjusting the size of another parameter that affects the first transmission power through the third parameter, and the size of the first transmission power is adjusted.

In one possible implementation, the first transmission power is determined according to the third transmission power and a power boost factor of the first transmission power; the second transmission power is determined according to the fourth transmission power and a power boost factor of the second transmission power.

In a possible implementation manner, the transmission power of the reference signal corresponding to the ith transmission of the uplink data is determined according to a redundancy version number adopted by the ith transmission of the uplink data; where i is 1, … K, K being the maximum number of repeated transmissions.

Therefore, the sending power of the reference signal corresponding to the ith transmission can be determined according to the redundancy version number adopted by the ith transmission of the uplink data, so as to ensure that the transmission power of the reference signal initially transmitted by the user equipment is greater than that of the retransmission reference signal. For each user equipment, the influence of the reference signals retransmitted by other user equipment on the reference signals initially transmitted by the user equipment is reduced, so that the decoding success probability of the reference signals initially transmitted by the user equipment is improved, namely the decoding success probability of the user equipment is improved.

In one possible implementation, the parameter information of at least one of the first transmission power to the fifth transmission power is configured by a Radio Resource Control (RRC) message and/or Downlink Control Information (DCI).

In a second aspect, an embodiment of the present application provides a user equipment, including: a transmission unit, configured to perform first transmission of uplink data and send a first reference signal to a network device based on first transmission power; the first reference signal is used for demodulating the first transmission of uplink data; the transmission unit is further used for executing the Nth transmission of the uplink data and sending a second reference signal to the network equipment based on the second transmission power, wherein N is an integer greater than or equal to 2; the second reference signal is used for demodulating the Nth transmission of the uplink data; wherein the second transmission power is less than the first transmission power.

In a possible implementation manner, the transmission unit is configured to control a first transmission of uplink data based on a third transmission power; a transmission unit, configured to control nth transmission of uplink data based on the fourth transmission power; wherein the third transmission power is the same as or different from the fourth transmission power.

In a possible implementation manner, the transmission unit is further configured to: performing N +1 th transmission of the uplink data and transmitting a third reference signal based on a fifth transmission power, the third reference signal being used for demodulating the N +1 th transmission of the uplink data; wherein the fifth transmission power is the same as or different from the second transmission power.

In a possible implementation manner, the first transmission power is determined according to the maximum transmission power of the user equipment, an expected target power value of an uplink channel, an open-loop power control parameter, a power offset value of a modulation and coding strategy MCS, a closed-loop power control adjustment amount and a transmission bandwidth allocated to the user equipment; the expected target power value of the uplink channel is determined according to a first parameter, the cell reference power and the power offset of the user equipment, wherein the first parameter is used for determining the power offset of the user equipment.

For technical effects of the second aspect and various possible implementations thereof, reference may be made to the technical effects of the first aspect and various possible implementations thereof, which are not described herein in detail.

In a third aspect, an embodiment of the present invention provides an apparatus, which exists in the form of a chip product, and the apparatus includes a processor and a memory, where the memory is configured to be coupled to the processor and store necessary program instructions and data of the apparatus, and the processor is configured to execute the program instructions stored in the memory, so that the apparatus performs the functions of the user equipment in the above method.

In a fourth aspect, an embodiment of the present invention provides a user equipment, where the user equipment may implement the function executed by the user equipment in the foregoing method embodiment, and the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the structure of the user equipment includes a processor and a communication interface, and the processor is configured to support the user equipment to perform the corresponding functions in the above method. The communication interface is used to support communication between the user equipment and other network elements. The user equipment may also include a memory for coupling with the processor that retains program instructions and data necessary for the user equipment.

In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform any one of the methods provided in the first aspect.

In a sixth aspect, embodiments of the present invention provide a computer program product containing instructions, which when run on a computer, cause the computer to perform any one of the methods provided in the first aspect.

In a seventh aspect, an embodiment of the present invention provides a method for repeated transmission, including: the network equipment sends power control parameter configuration information to the user equipment, wherein the power control parameter configuration information comprises power control parameters of reference signals, the power control parameters of the reference signals are used for determining transmission power of first reference signals used for demodulating first transmission in repeated transmission and transmission power of second reference signals used for other transmissions in the repeated transmission, and the power control parameters of the reference signals are sent so that the sending power of the first reference signals is larger than the transmission power of the second reference signals; and the network equipment receives the uplink data transmission sent by the user equipment based on the power control parameter configuration information and a reference signal for demodulating the uplink data transmission.

In an eighth aspect, an embodiment of the present invention provides a network device, including: a sending unit, configured to send power control parameter configuration information to a user equipment, where the power control parameter configuration information includes a power control parameter of a reference signal, the power control parameter of the reference signal is used to determine a transmission power of a first reference signal for demodulating a first transmission in a repeated transmission and a transmission power of a second reference signal for other transmissions in the repeated transmission, and the sending power control parameter of the reference signal makes the sending power of the first reference signal greater than the transmission power of the second reference signal; a receiving unit, configured to receive an uplink data transmission sent by a user equipment based on power control parameter configuration information and a reference signal used for demodulating the uplink data transmission.

In a ninth aspect, an embodiment of the present invention provides a network device, where the network device may implement the functions performed by the network device in the foregoing method embodiments, and the functions may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions.

In one possible design, the network device includes a processor and a communication interface, and the processor is configured to support the network device to perform the corresponding functions of the method. The communication interface is used for supporting communication between the network equipment and other network elements. The network device may also include a memory, coupled to the processor, that stores program instructions and data necessary for the network device.

In a tenth aspect, an embodiment of the present invention provides a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform any one of the methods provided in the seventh aspect.

In an eleventh aspect, embodiments of the present invention provide a computer program product comprising instructions, which when run on a computer, cause the computer to perform any one of the methods provided in the seventh aspect.

Drawings

Fig. 1 is a schematic diagram of a collision occurring between an initial transmission and a retransmission in the prior art;

fig. 2 is a schematic diagram of a communication system architecture according to an embodiment of the present application;

fig. 3 is a schematic signal interaction diagram of a method for repeated transmission according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating CDM groups corresponding to different types of DMRS patterns according to an embodiment of the present application;

fig. 5 is a schematic diagram of a UE performing initial transmission and retransmission of uplink data and a reference signal according to an embodiment of the present application;

fig. 6 is a first schematic diagram illustrating that a plurality of UEs perform initial transmission and retransmission of uplink data and reference signals according to an embodiment of the present application;

fig. 7 is a second schematic diagram illustrating that a plurality of UEs perform initial transmission and retransmission of uplink data and reference signals according to an embodiment of the present application;

fig. 8 is a first schematic structural diagram of a user equipment according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a user equipment according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a structure provided by an embodiment of the present application;

fig. 11 is a first schematic structural diagram of a network device according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a base station according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides a method and a device for repeated transmission, which are applied to a repeated transmission process, for example, an uplink transmission process of user equipment in a grant-free mode.

As shown in fig. 2, a communication system architecture diagram provided for the embodiment of the present application includes a network device (e.g., a base station) and a plurality of user equipments (e.g., UE1, UE2, and UE 3). Each user equipment is used for executing first transmission of uplink data and sending a first reference signal based on first transmission power, wherein the first reference signal is used for demodulating the first transmission of the uplink data; executing Nth transmission of uplink data and sending a second reference signal to the network equipment based on second transmission power, wherein N is an integer greater than or equal to 2; the second reference signal is used for demodulating the nth transmission of the uplink data. It can be understood that the first transmission of the uplink data, that is, the initial transmission of the uplink data, is a first reference signal sent based on the first transmission power, that is, an initial transmitted reference signal; and the Nth transmission of the uplink data, namely the (N-1) th retransmission of the uplink data, and the second reference signal, namely the (N-1) th retransmission reference signal, sent to the network equipment based on the second transmission power.

The base station may be a device capable of communicating with the user equipment. The base station may be a relay station or an access point, etc. The base station may be a Base Transceiver Station (BTS) in a global system for mobile communication (GSM) or Code Division Multiple Access (CDMA) network, or may be an nb (nodeb) in Wideband Code Division Multiple Access (WCDMA), or may be an eNB or enodeb (evolved nodeb) in LTE. The base station may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. The base station may also be a base station in a 5G network or a base station in a future evolution network; but also wearable devices or vehicle-mounted devices, etc.

The user equipment may be a terminal device providing voice and/or other traffic data connectivity to a user, or a handheld device having wireless connection capability, or other processing device connected to a wireless modem. The wireless terminal may be a portable, pocket, or computer-embedded or vehicle-mounted mobile device, and may also be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and other devices, which are not limited herein. The wired terminal can communicate with the access network device and the core network device through an overhead electric line and cable engineering (including overhead, underground and underwater cables, optical cables and the like) as a communication form of communication conduction. The wired terminal comprises a wired telephone, a wired television, a broadband computer and the like. Wired telephones include home or business phones, etc.; the cable television includes a Community Antenna Television (CATV), an Internet Protocol Television (IPTV), a network television, and the like.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same or similar items having substantially the same function and action. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship; in the formula, the character "/" indicates that the preceding and following related objects are in a relationship of "division".

It should be noted that in the embodiments of the present invention, "of", "corresponding", and "corresponding" may be sometimes used in combination, and it should be noted that the intended meaning is consistent when the difference is not emphasized.

An embodiment of the present application provides a method for repeated transmission, as shown in fig. 3, including:

301. the network equipment sends power control parameter configuration information to the user equipment.

The power control parameter configuration information comprises power control parameters of the reference signals, the power control parameters of the reference signals are used for determining the transmission power of a first reference signal used for demodulating first transmission in repeated transmission and the transmission power of a second reference signal used for other transmissions in the repeated transmission, and the reference signal transmission power control parameters enable the transmission power of the first reference signal to be larger than the transmission power of the second reference signal.

302. The user equipment receives the power control parameter configuration information sent by the network equipment.

303. The user equipment performs first transmission of uplink data and transmits a first reference signal based on first transmission power to the network equipment; the first reference signal is used for demodulating the first transmission of the uplink data.

In one possible design, the first transmission power is determined according to a maximum transmission power of the ue, an expected target power value of an uplink channel, an open-loop power control parameter, a power offset value (offset) of a Modulation and Coding Scheme (MCS), a closed-loop power control adjustment amount, and a transmission bandwidth allocated to the ue. The expected target power value of the uplink channel is determined according to a first parameter, cell reference power and power offset of the user equipment, wherein the first parameter is used for determining the power offset of the user equipment, and then the size of the first transmission power can be adjusted.

In one possible design, the user equipment may perform a first transmission of uplink data on a Physical Uplink Shared Channel (PUSCH) channel and transmit a first reference signal based on a first transmission power. At this time, the first transmission power may be a minimum value of a maximum transmission power of the UE and a configured transmission power of the UE. The configured transmission power of the UE may be determined according to an expected target power value of the PUSCH configured by the higher layer signaling, an open-loop power control parameter (including a path loss compensation factor and a path loss estimated by a pilot), a power offset value corresponding to the MCS, a transmission bandwidth allocated to the UE, and a closed-loop power control adjustment amount.

Illustratively, when the first parameter corresponding to the first transmission power is γ, the first transmission power P is_{PUSCH，f，c}(i,j,q_dAnd l) is as shown in formula (1):

wherein, P_{O_PUSCH，f，c}(j)＝P_{O_NOMINAL_PUSCH，f，c}(j)+P_{O_UE_PUSCH，f，c}(j,γ)

Wherein, P_CMAX，f，c(i) Maximum transmission power of the user equipment in a transmission time unit i; f represents different carriers; c represents the sequence number of the serving cell; p_{O_PUSCH，f，c}(j) Different values of j represent different scheduling modes or indexes of different parameter set configurations for the expected received power of a network device (e.g., a base station); for example, J ═ 0 is applied to transmission of a Physical Random Access Channel (PRACH), J ═ 1 is applied to a grant-free transmission mode, and J ═ 2 … J is applied to a grant-based transmission mode; p_{O_NOMINAL_PUSCH，f，c}(j) Represents a reference power of a serving cell; p_{O_UE_PUSCH，f，c}(j, γ) represents a power offset of the user equipment;

a transmission bandwidth of a PUSCH allocated to the user equipment; μ represents different subcarrier spacing parameters; alpha is alpha_f，c(j) And PL_f，c(q_d) Representing an open loop power control parameter; wherein alpha is_f，c(j) Represents a path loss compensation factor; PL_f，c(q_d) Is represented by a parameter q_dAn indicated path loss of the pilot estimate; q. q.s_dIndicating a pilot measurement resource type; delta_TF，f，c(i) To representA power offset value corresponding to the MCS; f. of_f，cAnd (i, l) represents the adjustment amount of the closed-loop power control, and l represents the mode selection parameter of the closed-loop power control according to different carrier types.

In one possible design, the first transmission power is determined according to the second parameter, a maximum transmission power of the ue, an expected target power value of the uplink channel, an open-loop power control parameter, a power offset value of the MCS, a closed-loop power control adjustment amount, and a transmission bandwidth allocated to the ue. Wherein the second parameter is determined by the user equipment or the network equipment.

When the user equipment performs a first transmission of uplink data on the PUSCH channel and transmits the first reference signal based on the first transmission power, the first transmission power may be a minimum value of a maximum transmission power of the UE and a configured transmission power of the UE. The configured transmission power of the UE may be determined according to a second parameter configured by the higher layer signaling, an expected target power value of the PUSCH, an open loop power control parameter, a power offset value corresponding to the MCS, a transmission bandwidth allocated to the UE, and a closed loop power control adjustment amount. Wherein the open loop power control parameters include a path loss compensation factor and a path loss of the pilot estimation.

Illustratively, when the second parameter corresponding to the first transmission power is β, the first transmission power P_{PUSCH，f，c}(i,j,q_dAnd l) is as shown in formula (2):

for each parameter in the formula (2), reference may be made to the description of each parameter in the formula (1), and details are not repeated here.

In one possible design, values of the first parameter and the second parameter may be determined by the user equipment, or may be configured by the network equipment through signaling, for example, through an RRC message and/or DCI. The value of the first parameter or the second parameter may correspond to a specific value or a set of values, where the set includes a plurality of values.

Meanwhile, the user equipment may control the first transmission of the uplink data based on the third transmission power. It should be noted that the first transmission power is the same as the third transmission power, or the first transmission power is greater than the third transmission power. That is, the transmission power corresponding to the reference signal for demodulating the first transmission of the uplink data and the transmission power corresponding to the first transmission of the uplink data may be the same, or the transmission power corresponding to the reference signal for demodulating the first transmission of the uplink data may be greater than the transmission power corresponding to the first transmission of the uplink data. The third transmission power may be calculated in a manner referred to the first transmission power calculation manner.

Specifically, when the first transmission power is greater than the third transmission power, a value of a first parameter corresponding to the first transmission power is different from a value of a first parameter corresponding to the third transmission power, and the expected received power of the base station corresponding to the first transmission power is greater than the expected received power of the base station corresponding to the third transmission power. Or the value of the second parameter corresponding to the first transmission power is larger than the value of the second parameter corresponding to the third transmission power. For example, the value of the second parameter corresponding to the first transmission power is greater than 0, and the value of the second parameter corresponding to the third transmission power is less than 0 or equal to 0. The base station demodulates the first transmission of the uplink data according to the first transmission power of the reference signal, so that the first transmission power is greater than the third transmission power, and the network equipment can demodulate the first transmission of the uplink data better.

In one possible case, when the first transmission power is the same as the third transmission power, the power boosting factor of the first transmission power may be used to boost the first transmission power so that the first transmission power is greater than the third transmission power of the uplink data. For example, when the first reference signal is a demodulation reference signal (DMRS) symbol, a power boosting factor of the first transmission power may be used to boost the transmission power of the DMRS symbol so that the first transmission power of the DMRS symbol is equal to or greater than the third transmission power of the uplink data. At this time, the user equipment may use Resource Elements (REs) in a Code Division Multiplexing (CDM) group that are not occupied by uplink data of other user equipments for power boosting. Wherein, one CDM group is a set of pilot ports using CDM in the same time-frequency resource. That is, the value of the power boost factor may be determined according to REs of CDM groups that are not occupied by uplink data.

For example, the calculation formula of the power boost factor of the first transmission power is shown as formula (3):

where EPRE represents the power per RE (energy per resource element). The value of Q is determined according to the number of CDM groups not occupied by uplink data of other user equipments.

Currently, 5G supports two DMRS patterns, as shown in fig. 4 (a), for the first DMRS pattern, two groups of CDM are supported, and Q may have two values, which are 1 and 2 respectively. ρ can have two values, 0 and-3, respectively. Assuming that a CDM group 0 is occupied by DMRS symbols transmitted by the user equipment a, if a CDM group 1 is occupied by uplink data of other user equipment, Q is 1 and ρ is 0dB for the user equipment a, that is, the CDM group 1 cannot be used for the user equipment a to perform power boosting on the first transmission power for transmitting the DMRS symbols. If CDM group 1 is not occupied by uplink data of other user equipment, Q is 2 and ρ is-3 dB for user equipment a, and then CDM group 1 may be used for user equipment a to perform power boosting on the first transmission power for transmitting DMRS symbols. As shown in fig. 4 (b), for the second DMRS pattern, supporting three sets of CDM, ρ may have three values, 0, -3, and-4.77. Assuming that a CDM group 0 is occupied by DMRS symbols transmitted by a user equipment a, if CDM groups 1 and 2 are occupied by uplink data of other user equipments, Q is 1 and ρ is 0dB for the user equipment a, that is, CDM groups 1 and 2 cannot be used for power boosting of the first transmission power for transmitting the DMRS symbols by the user equipment a. If CDM group 1 or CDM group 2 is not occupied by uplink data of other user equipments, then Q is 2, ρ is-3 dB for user equipment a, i.e. CDM group 1 or CDM group 2 may be used for power boosting. If neither CDM group 1 nor CDM group 2 is occupied by uplink data of other user equipment, then Q is 3 and ρ is-4.77 dB for user equipment a, i.e. both CDM group 1 and CDM group 2 are available for power boosting.

304. The network equipment receives uplink data transmitted by the user equipment for the first time, and receives a first reference signal sent by the user equipment based on the first transmission power.

The network device may receive uplink data first transmitted by the user equipment based on the third transmission power, and receive a first reference signal sent by the user equipment based on the first transmission power.

305. The user equipment executes the Nth transmission of the uplink data and sends a second reference signal to the network equipment based on the second transmission power, wherein N is an integer greater than or equal to 2; the second reference signal is used for demodulating the nth transmission of the uplink data.

Wherein the second transmission power is less than the first transmission power. That is, the power of the reference signal for demodulating the nth transmitted uplink data is smaller than the power of the reference signal for demodulating the first transmitted uplink data. Therefore, the influence of the reference signal for demodulating the uplink data transmitted for the Nth time on the reference signal for demodulating the uplink data transmitted for the first time is reduced, the detection reliability of the initially transmitted reference signal of the user equipment can be improved, and the decoding success probability of the initially transmitted reference signal of the user equipment is improved.

The method of the user equipment determining the second transmission power may refer to the method of determining the first transmission power in step 303. It should be noted that a value of the first parameter corresponding to the second transmission power is different from a value of the first parameter corresponding to the first transmission power, and a power offset of the user equipment corresponding to the second transmission power is smaller than a power offset of the user equipment corresponding to the first transmission power. Or the value of the second parameter corresponding to the second transmission power is smaller than the value of the second parameter corresponding to the first transmission power. Or, when the first transmission power is boosted by the power boosting factor, the second transmission power is not boosted by the power boosting factor. Therefore, the transmission power of the reference signal initially transmitted by the user equipment is greater than that of the reference signal retransmitted by other user equipment, so that the influence of the reference signal retransmitted by other user equipment on the reference signal initially transmitted by the user equipment is reduced, the decoding success probability of the reference signal initially transmitted by the user equipment is improved, and the decoding success probability of the reference signal initially transmitted by the user equipment is improved.

The user equipment may control nth transmission of the uplink data based on the fourth transmission power; wherein the fourth transmission power is the same as or different from the third transmission power. That is, the transmission power corresponding to the first transmission of the uplink data and the transmission power corresponding to the nth transmission of the uplink data may be the same or different. The fourth transmission power may be calculated in a manner referred to the first transmission power calculation in step 303.

In one possible design, the third transmission power is greater than the fourth transmission power. Specifically, a value of the first parameter corresponding to the third transmission power is different from a value of the first parameter corresponding to the fourth transmission power, and the power offset of the user equipment corresponding to the second transmission power is smaller than the power offset of the user equipment corresponding to the first transmission power. Or the value of the second parameter corresponding to the third transmission power is greater than the value of the second parameter corresponding to the fourth transmission power. The decoding reliability of the initial transmission of the user equipment is highest, so that the transmission power corresponding to the first transmission is greater than the transmission power corresponding to the Nth transmission of the uplink data, and the network equipment is favorable for receiving the first transmission of the uplink data better.

In one possible design, the fourth transmission power is the same as the second transmission power, or the second transmission power is less than the fourth transmission power. That is to say, the transmission power corresponding to the uplink data transmitted for the nth time and the transmission power corresponding to the reference signal for demodulating the uplink data transmitted for the nth time may be the same, or the transmission power corresponding to the reference signal for demodulating the uplink data transmitted for the nth time is smaller than the transmission power corresponding to the uplink data transmitted for the nth time. Therefore, the second transmission power is lower, the influence of the retransmitted reference signal on the initially transmitted reference signal can be better reduced, the first transmission of uplink data by other user equipment is facilitated, the decoding reliability of the initially transmitted reference signal to other user equipment by the network equipment is improved, and the communication efficiency of the system is improved.

In one possible design, the second transmission power is determined based on the fourth transmission power and a power boost factor for the second transmission power. The calculation of the power boosting factor of the second transmission power may refer to the calculation of the power boosting factor of the first transmission power in step 303.

In one possible design, the user equipment performs an (N + 1) th transmission of uplink data and transmits a third reference signal based on a fifth transmission power, the third reference signal being used to demodulate the (N + 1) th transmission of the uplink data. Wherein the fifth transmission power is the same as or different from the second transmission power. That is, the transmission power corresponding to the reference signal for demodulating the uplink data transmitted at the N +1 th time and the transmission power corresponding to the reference signal for demodulating the uplink data transmitted at the N th time may be the same or different. The method for the user equipment to determine the fifth transmission power and the second transmission power may refer to the method for determining the first transmission power in step 303.

In one possible design, the fifth transmission power is less than the second transmission power. For example, as shown in (a) of fig. 5, the transmission power of the reference signal retransmitted for the second time is smaller than that of the reference signal retransmitted for the first time, and the transmission power of the reference signal retransmitted for the third time is smaller than that of the reference signal retransmitted for the second time. It should be noted that, when the fifth transmission power is smaller than the second transmission power, a value of the first parameter corresponding to the fifth transmission power is different from a value of the first parameter corresponding to the second transmission power, and a power offset of the user equipment corresponding to the fifth transmission power is smaller than a power offset of the user equipment corresponding to the second transmission power. Or the value of the second parameter corresponding to the fifth transmission power is smaller than the value of the second parameter corresponding to the second transmission power. Therefore, compared with the influence of the reference signal retransmitted based on the second transmission power on the initially transmitted reference signal, the influence of the reference signal retransmitted based on the fifth transmission power on the initially transmitted reference signal is smaller, which is beneficial for the network device to better receive the first transmission of uplink data of other user equipment, and can improve the decoding reliability of the initial transmission of other user equipment, thereby improving the communication efficiency of the system.

In one possible design, the user equipment performs an (N + 1) th transmission of uplink data based on a sixth transmission power. Wherein the sixth transmission power is the same as or different from the fourth transmission power. That is, the transmission power of the uplink data of the N +1 th transmission and the transmission power of the uplink data of the nth transmission may be the same or different. The method of the user equipment determining the sixth transmission power may refer to the method of determining the first transmission power in step 303.

In one possible design, the sixth transmission power is less than the fourth transmission power. And, the sixth transmission power may be the same as the fifth transmission power. For example, as shown in (b) of fig. 5, the transmission power of the uplink data retransmitted for the second time is smaller than that of the uplink data retransmitted for the first time, and the transmission power of the uplink data retransmitted for the third time is smaller than that of the uplink data retransmitted for the second time.

In one possible design, the transmission power of the reference signal corresponding to the ith transmission of the uplink data is determined according to the redundancy version number adopted by the ith transmission of the uplink data; where i is 1, …, K is the maximum number of repeated transmissions. That is, different redundancy version numbers may have a correspondence (binding relationship) with different transmission powers.

Illustratively, when the RV sequence is {0, 3, 0, 3}, the transmission power of the reference signal transmitted by the user equipment on RV0 for the first time is greater than the transmission power of the reference signal transmitted on RV 3. When the RV sequence is {0, 2, 3, 1}, the transmission power of the reference signal transmitted by the user equipment on RV0 for the first time is greater than the transmission power of the reference signal transmitted on RV1, RV2 or RV 3. It is understood that the 1 st transmission may employ a redundancy version number of RV0, and the 2 nd, … nd transmissions may employ a redundancy version number of RV1, RV2, or RV 3.

Therefore, the sending power of the reference signal corresponding to the ith transmission can be determined according to the redundancy version number adopted by the ith transmission of the uplink data, so as to ensure that the transmission power of the reference signal initially transmitted by the user equipment is greater than that of the retransmitted reference signal, and for each user equipment, the influence of the reference signal retransmitted by other user equipment on the reference signal initially transmitted by the user equipment is reduced, so that the decoding success probability of the reference signal initially transmitted by the user equipment is improved, namely the decoding success probability of the user equipment is improved.

306. And the network equipment receives the uplink data transmitted by the user equipment for the Nth time and receives a second reference signal sent by the user equipment based on the second transmission power.

The network device may receive uplink data transmitted by the user equipment for the nth time based on the fourth transmission power, and receive a second reference signal sent by the user equipment based on the second transmission power.

In one possible design, the network device may receive uplink data transmitted by the user equipment for the (N + 1) th transmission based on the fifth transmission power, and receive a second reference signal sent by the user equipment based on the second transmission power.

Compared with the prior art, the collision between the initial transmission of one user equipment and the retransmission of other user equipment may cause the detection reliability of the initial transmission of the user equipment to be reduced, so that the decoding success probability of the user equipment is reduced.

For example, assuming that RV sequences corresponding to the UE1, the UE2, and the UE3 are {0, 3, 0, 3}, when the first transmission power is greater than the second transmission power, the first transmission power is the same as the third transmission power, and the second transmission power is the same as the fourth transmission power, fig. 6 is a schematic diagram of the UE1, the UE2, and the UE3 performing a first transmission of uplink data and transmitting a first reference signal, and performing an nth transmission of uplink data and transmitting a second reference signal to the network device, where N is 2, 3, or 4, and power magnitudes are highly schematic in each figure. When the first transmission power is greater than the second transmission power, and the first transmission power is greater than the third transmission power, and the second transmission power is less than the fourth transmission power, as shown in fig. 7, a schematic diagram of performing a first transmission of uplink data and transmitting a first reference signal for the UE1, the UE2, and the UE3, and performing an nth transmission of uplink data and transmitting a second reference signal to the network device is shown. As can be seen from fig. 6 and 7, the transmission power of the reference signal of the user equipment that transmits the initial transmission is greater than the transmission power of the reference signal of the user equipment that transmits the retransmission, for example, the transmission power of the reference signal of the UE2 is greater than the transmission power of the reference signal of the retransmission of the UE1, or the transmission power of the reference signal of the UE3 is greater than the transmission power of the reference signal of the retransmission of the UE2, so that the influence of the reference signal of the retransmission of the UE1 on the reference signal of the initial transmission of the UE2 is reduced, or the influence of the reference signal of the retransmission of the UE2 on the reference signal of the initial transmission of the UE3 is reduced, thereby increasing the decoding success probability of the initial transmission of the UE2 or the UE3 by the network device.

The above-mentioned scheme provided by the embodiments of the present application is mainly introduced from the perspective of user equipment and network equipment. It is understood that the user equipment and the network device, in order to implement the above functions, include corresponding hardware structures and/or software modules for performing the respective functions. Those skilled in the art will readily appreciate that the algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or a combination of hardware and computer software. Whether a function is performed as hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In the embodiment of the present application, the user equipment and the network equipment may be divided into the functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

In the case of adopting the functional modules divided corresponding to the respective functions, fig. 8 shows a first possible structural diagram of the user equipment 8 in the foregoing embodiment, where the user equipment includes: a transmission unit 801 and a processing unit 802. In this embodiment of the present application, the transmission unit 801 may be configured to perform first transmission of uplink data and send a first reference signal to a network device based on first transmission power; the first reference signal is used for demodulating the first transmission of uplink data; executing Nth transmission of uplink data and sending a second reference signal to the network equipment based on second transmission power, wherein N is an integer greater than or equal to 2; the second reference signal is used for demodulating the Nth transmission of the uplink data; wherein the second transmission power is less than the first transmission power. The processing unit 802 is configured to determine the second transmission power and the first transmission power. The transmission unit 801 and the processing unit 802 are used to support the user equipment to perform the processes 303 and 305 in fig. 3.

In case of using integrated units, fig. 9 shows a possible structure diagram two of the user equipment involved in the above embodiment. In this application, the user equipment may include a processing module 901, a communication module 902, and a storage module 903. The processing module 901 is configured to control hardware devices and application software of each part of the user equipment; the communication module 902 is configured to receive instructions and/or data sent by other devices, and may also send data of the user equipment to other devices; the storage module 903 is used for storing software programs, storing data, running software and the like of the user equipment. The processing module 901 may be a determination unit or a controller, and may be, for example, a Central Processing Unit (CPU), a general purpose determination unit, a digital signal determination unit (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The determining unit may also be a combination that performs a computing function, e.g., comprising one or more micro-processing units, a combination of a DSP and a micro-processing unit, etc. The communication module 902 may be a transceiver, a transceiving circuit or a communication interface, etc. The storage module 903 may be a memory.

In one possible design, the user equipment may be implemented by the structure (apparatus or system) in fig. 10.

Fig. 10 is a schematic diagram of a structure provided in an embodiment of the present application. Architecture 1000 includes at least one processor 1001, a communication bus 1002, memory 1003, and at least one communication interface 1004.

The processor 1001 may be a CPU, a micro-processing unit, an ASIC, or one or more integrated circuits for controlling the execution of the programs of the present application.

The communication bus 1002 may include a path that conveys information between the aforementioned components.

The communication interface 1004 may be any device, such as a transceiver, for communicating with other devices or communication networks, such as an ethernet, a Radio Access Network (RAN), a Wireless Local Area Network (WLAN), etc.

The memory 1003 may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a Random Access Memory (RAM) or other type of dynamic storage device that can store information and instructions, an electrically erasable programmable read-only memory (EEPROM), a compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory may be a separate memory, connected to the determination unit via a bus. The memory may also be integrated with the determination unit.

The memory 1003 is used for storing application program codes for executing the present application, and the processor 1001 controls the execution. The processor 1001 is configured to execute application program code stored in the memory 1003, thereby implementing the functions of the method of the present patent.

In particular implementations, processor 1001 may include one or more CPUs such as CPU0 and CPU1 of fig. 10, for example, as one embodiment.

In particular implementations, architecture 1000 may include multiple processors, such as processor 1001 and processor 1007 in fig. 10, for example, as an example. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, and/or processing cores for processing data (e.g., computer program instructions).

In particular implementations, structure 1000 may also include an output device 1005 and an input device 1006, as one embodiment. The output device 1005 communicates with the processor 1001 and may display information in a variety of ways. For example, the output device 1005 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like. The input device 1006 is in communication with the processor 1001 and may accept user input in a variety of ways. For example, the input device 1006 may be a mouse, keyboard, touch screen device, or sensing device, among others.

In a specific implementation, the structure 1000 may be a desktop, a laptop, a web server, a Personal Digital Assistant (PDA), a mobile phone, a tablet, a wireless terminal device, a communication device, an embedded device, or a device with a similar structure as in fig. 10. The embodiment of the present application does not limit the type of the structure 1000.

In the case of dividing each functional module by corresponding functions, fig. 11 shows a first possible structural diagram of the network device 11 according to the foregoing embodiment, where the network device includes: a transmitting unit 1101 and a receiving unit 1102. In this embodiment of the present application, the sending unit 1101 is configured to send power control parameter configuration information to a user equipment, where the power control parameter configuration information includes a power control parameter of a reference signal, the power control parameter of the reference signal is used to determine a transmission power of a first reference signal for demodulating a first transmission in a repeated transmission and a transmission power of a second reference signal for other transmissions in the repeated transmission, and the reference signal sends the power control parameter so that the transmission power of the first reference signal is greater than the transmission power of the second reference signal; a receiving unit 1102, configured to receive an uplink data transmission sent by the ue based on the power control parameter configuration information and a reference signal used for demodulating the uplink data transmission. The sending unit 1101 is configured to support the network device to execute the process 301 in fig. 3. The receiving unit 1102 is configured to support the network device to perform the processes 304 and 306 in fig. 3.

In the case of an integrated unit, fig. 12 shows a second possible structural diagram of the network device involved in the above embodiment. In this application, the network device may include a processing module 1201, a communication module 1202, and a storage module 1203. The processing module 1201 is configured to control hardware devices and application software of each part of the network device; the communication module 1202 is configured to receive an instruction sent by another device, and may also send data of the network device to the other device; the storage module 1203 is used for storing software programs of the network device, storing data, running software, and the like. The processing module 1201 may be a determination unit or a controller, and may be, for example, a CPU, a general purpose determination unit, a DSP, an ASIC, an FPGA or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The determining unit may also be a combination that performs a computing function, e.g., comprising one or more micro-processing units, a combination of a DSP and a micro-processing unit, etc. The communication module 1202 may be a transceiver, a transceiver circuit or a communication interface, etc. The storage module 1203 may be a memory.

In one possible design, the network device may be implemented by the base station of fig. 13.

As shown in fig. 13, a schematic structural diagram of a base station provided in the embodiment of the present application includes a portion 1301 and a portion 1302. The base station 1301 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the section 1302 is mainly used for baseband processing, control of a base station, and the like. Portion 1301 may be generally referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc. Section 1302 is typically a control center of the base station, which may be referred to generally as a processing unit, for controlling the base station to perform the steps described above with respect to the base station (i.e., serving base station) in fig. 3. Reference is made in particular to the description of the relevant part above.

The transceiver unit in section 1301 may also be referred to as a transceiver, or a transceiver, and includes an antenna and a radio frequency unit, where the radio frequency unit is mainly used for performing radio frequency processing. Optionally, a device used for implementing the receiving function in part 1301 may be regarded as a receiving unit, and a device used for implementing the sending function may be regarded as a sending unit, that is, part 1301 includes a receiving unit and a sending unit. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and a transmitting unit may be referred to as a transmitter, a transmitting circuit, or the like.

Section 1302 may include one or more boards, each board may include one or more determining units and one or more memories, and the determining units are configured to read and execute programs in the memories to implement baseband processing functions and control of the base station. If a plurality of single boards exist, the single boards can be interconnected to increase the processing capacity. As an optional implementation, multiple boards may share one or more determining units, or multiple boards may share one or more memories, or multiple boards may share one or more determining units at the same time. The memory and the determining unit may be integrated or may be provided separately. In some embodiments,

parts

1301 and 1302 may be integrated or may be separate. In addition, all functions in the part 1302 may be integrated in one chip, or part of the functions may be integrated in one chip, so that another part of the functions is integrated in one or more other chips, which is not limited in this application.

Those skilled in the art will recognize that in one or more of the examples described above, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a determining unit of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the determining unit of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to encompass such modifications and variations.

Claims

1. A method of repeating a transmission, comprising:

the user equipment executes the first transmission of uplink data and sends a first reference signal to the network equipment based on the first transmission power; the first reference signal is used for demodulating the first transmission of the uplink data;

the user equipment executes the Nth transmission of the uplink data and sends a second reference signal to the network equipment based on second transmission power, wherein N is an integer greater than or equal to 2; wherein the second reference signal is used for demodulating the Nth transmission of the uplink data;

wherein the second transmission power is less than the first transmission power;

the sending power of the reference signal corresponding to the ith transmission of the uplink data is determined according to the redundancy version number adopted by the ith transmission of the uplink data; wherein, i is 1, … K, K is the maximum number of repeated transmission;

the user equipment controls the first transmission of the uplink data based on a third transmission power;

the UE controls the Nth transmission of the uplink data based on a fourth transmission power;

wherein the third transmission power is the same as or different from the fourth transmission power;

the second transmission power is the same as the fourth transmission power, or the second transmission power is smaller than the fourth transmission power.

2. The method of claim 1, wherein the first transmission power is the same as the third transmission power, or wherein the first transmission power is greater than the third transmission power.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

the user equipment performs the (N + 1) th transmission of the uplink data and sends a third reference signal based on a fifth transmission power, wherein the third reference signal is used for demodulating the (N + 1) th transmission of the uplink data;

wherein the fifth transmission power is the same as or different from the second transmission power.

4. The method according to claim 1 or 2,

the first transmission power is determined according to the maximum transmission power of the user equipment, an expected target power value of an uplink channel, an open-loop power control parameter, a power offset value of a Modulation and Coding Strategy (MCS), a closed-loop power control adjustment amount and a transmission bandwidth allocated to the user equipment;

the expected target power value of the uplink channel is determined according to a first parameter, a cell reference power and a power offset of the user equipment, wherein the first parameter is used for determining the size of the power offset of the user equipment.

5. The method according to claim 1 or 2,

the first transmission power is determined according to a second parameter, the maximum transmission power of the user equipment, an expected target power value of an uplink channel, an open-loop power control parameter, a power offset value of a Modulation and Coding Strategy (MCS), a closed-loop power control adjustment amount and a transmission bandwidth allocated to the user equipment; wherein the second parameter is determined by the user equipment or the network equipment.

6. The method of claim 2,

the first transmission power is determined according to the third transmission power and a power boost factor of the first transmission power;

the second transmission power is determined according to the fourth transmission power and a power boost factor of the second transmission power.

7. A method of repeating a transmission, comprising:

the network equipment sends power control parameter configuration information to user equipment, wherein the power control parameter configuration information comprises power control parameters of reference signals, the power control parameters of the reference signals are used for determining transmission power of first reference signals used for demodulating first transmission in repeated transmission and transmission power of second reference signals used for other transmissions in the repeated transmission, and the transmission power control parameters of the reference signals enable the transmission power of the first reference signals to be larger than the transmission power of the second reference signals;

the network equipment receives uplink data transmission sent by the user equipment based on the power control parameter configuration information and a reference signal used for demodulating the uplink data transmission;

the sending power of the reference signal corresponding to the ith transmission of the uplink data received by the network equipment is determined according to the redundancy version number adopted by the ith transmission of the uplink data; wherein, i is 1, … K, K is the maximum number of repeated transmission;

the network equipment receives first transmission of the uplink data controlled by the user equipment based on third transmission power;

the network equipment receives the Nth transmission of the uplink data controlled by the user equipment based on a fourth transmission power, wherein N is an integer greater than or equal to 2;

8. A user device, comprising:

the transmission unit is used for executing the first transmission of the uplink data and sending a first reference signal to the network equipment based on the first transmission power determined by the processing unit; the first reference signal is used for demodulating the first transmission of the uplink data;

the transmission unit is further configured to perform nth transmission of the uplink data and send a second reference signal to the network device based on the second transmission power determined by the processing unit, where N is an integer greater than or equal to 2; wherein the second reference signal is used for demodulating the Nth transmission of the uplink data;

the transmission unit is configured to control the first transmission of the uplink data based on the third transmission power determined by the processing unit;

the transmission unit is configured to control the nth transmission of the uplink data based on the fourth transmission power determined by the processing unit;

9. The UE of claim 8, wherein the first transmission power is the same as the third transmission power, or wherein the first transmission power is greater than the third transmission power.

10. The ue of claim 8 or 9, wherein the transmitting unit is further configured to:

performing an (N + 1) th transmission of the uplink data and transmitting a third reference signal based on a fifth transmission power determined by the processing unit, the third reference signal being used for demodulating the (N + 1) th transmission of the uplink data;

11. The user equipment according to claim 8 or 9,

12. The user equipment according to claim 8 or 9,

13. The user equipment according to claim 8 or 9,

14. A network device, comprising:

a sending unit, configured to send power control parameter configuration information to a user equipment, where the power control parameter configuration information includes a power control parameter of a reference signal, the power control parameter of the reference signal is used to determine a transmission power of a first reference signal used for demodulating a first transmission in a repeated transmission and a transmission power of a second reference signal used for other transmissions in the repeated transmission, and the reference signal sending power control parameter enables a sending power of the first reference signal to be greater than a transmission power of the second reference signal;

a receiving unit, configured to receive uplink data transmission sent by the ue based on the power control parameter configuration information and a reference signal used to demodulate the uplink data transmission;

the sending power of the reference signal corresponding to the ith transmission of the uplink data of the user equipment received by the receiving unit is determined according to the redundancy version number adopted by the ith transmission of the uplink data; wherein, i is 1, … K, K is the maximum number of repeated transmission;

the receiving unit receives first transmission of the uplink data controlled by the user equipment based on third transmission power;

the receiving unit receives an Nth transmission of the uplink data controlled by the user equipment based on a fourth transmission power, wherein N is an integer greater than or equal to 2;